I don't know about the water tower. I do believe someone was up there based on the videos. But I can't see that being a shooter. Coordinator, maybe. I think the second and possibly 3rd shooter was possibly inside the building the kid was on, and another in a tree somewhere to the right of the building and water tower. I think the tree shooter's job was to take out or at least delay the counter snipers on the roof while the kid and the real shooter takes their shots. I'd love to go there and check that tree line for evidence of someone climbing a tree or shell casings.

I don't know about the water tower. I do believe someone was up there based on the videos. But I can't see that being a shooter. Coordinator, maybe. I think the second and possibly 3rd shooter was possibly inside the building the kid was on, and another in a tree somewhere to the right of the building and water tower. I think the tree shooter's job was to take out or at least delay the counter snipers on the roof while the kid and the real shooter takes their shots.